Description: Complete Protection Circuit: GA490 Active Loop Broadband Receiving Antenna has a complete protection circuit for anti-reverse battery, over discharge, over charge, over current, and antenna terminal short circuitWith numerically-precision processed shells, PCB high-frequency design, feeder high-density dense copper pure copper 50-1.5 feeder, materials used Create an high cost-effective antenna for the entire network.Built-in 3.7V 18650 flat head lithium battery. No external power supply required. The USB charging port is compatible with 5V charging plug and charging cables of Android phonesHigh-performance outdoor active loop antenna--radio / SDR reception.Outdoor Antenna Box SMA connector. Power Box TYPE-C interface Specification: Material: Plastic+MetalMain coverage: 100kHz-179MHzWorking voltage: 9-12vCharging interface: type-CBuilt-in 18650 lithium batteryPackage size: 28.5 x 28 x 7cm/11.22 x 11.02 x 2.76inchPacking weight: 850g Package included: 1 x Loop Stainless Steel Wire1 x Preamplifier1 x Active Antenna Power Supply (Built-in Battery)1 x Double SMA Male 10m Cable1 x Double SMA Male 1m Cable1 x SMA Male to 3.5 Plug 1m Cable1 x USB Type-C Charging Cable2 x Stainless Steel Clamp2 x Connection Tube
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